ccjhames,

You can click the link below to download the ChipSet Drivers. These are the drivers that load the SMBus Controller.

Inspiron 530 Drivers and Downloads

Windows XP and Windows Vista are both effectively at End of Life and have no support from major vendors such as Google Chrome. I advise taking the 10130 unofficial upgrade path to make the system a Windows 10 Pro Device:

http://dellwindowsreinstallationguide.com/windows-xpvista-%e2%86%92-windows-10-free-upgrade/

https://www.youtube.com/playlist?list=PL1RkaknDn7v8RDvZUZBKQnuIVM_cqbgs3

Windows 10 TH2 Pro will run well on a late Windows Vista system such as the Inspiron 530.